diff options
| author | Larry Finger <Larry.Finger@lwfinger.net> | 2009-07-08 08:33:02 -0500 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-07-08 15:24:30 -0400 |
| commit | 47ab3840a389ff1b9959734995123e5bc94c3443 (patch) | |
| tree | 10697ee82ea440263ce81acf40bd266c86352a00 | |
| parent | 804ef71ee183121de5e9bca1d70d114c97300e17 (diff) | |
| download | linux-47ab3840a389ff1b9959734995123e5bc94c3443.tar.gz linux-47ab3840a389ff1b9959734995123e5bc94c3443.tar.bz2 linux-47ab3840a389ff1b9959734995123e5bc94c3443.zip | |
p54: tx refused but queue active
In the mainline kernel, p54usb will fail because the TX queue length can
become < 0. This problem has been reported as Bugzilla #13725. The failure
is expressed by the following message in the logs:
WARNING: at net/mac80211/tx.c:1325 ieee80211_tx+0x23c/0x298 [mac80211]()
Hardware name: HP Pavilion dv2700 Notebook PC
tx refused but queue active
This problem has been recently observed in the wireless-testing tree, where
a full solution is being tested. That fix is too invasive for 2.6.31-rcX,
but the simple change supplied here will prevent the failure.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/p54/p54common.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/wireless/p54/p54common.c b/drivers/net/wireless/p54/p54common.c index 48d81d98e12d..22ca122bd798 100644 --- a/drivers/net/wireless/p54/p54common.c +++ b/drivers/net/wireless/p54/p54common.c @@ -912,13 +912,14 @@ static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb) } __skb_unlink(entry, &priv->tx_queue); - spin_unlock_irqrestore(&priv->tx_queue.lock, flags); frame_len = entry->len; entry_hdr = (struct p54_hdr *) entry->data; entry_data = (struct p54_tx_data *) entry_hdr->data; - priv->tx_stats[entry_data->hw_queue].len--; + if (priv->tx_stats[entry_data->hw_queue].len) + priv->tx_stats[entry_data->hw_queue].len--; priv->stats.dot11ACKFailureCount += payload->tries - 1; + spin_unlock_irqrestore(&priv->tx_queue.lock, flags); /* * Frames in P54_QUEUE_FWSCAN and P54_QUEUE_BEACON are |